I later manually corrected the issue with another transaction, thus double spend.
For post-mortem analysis, would you mind sharing how that raw transaction was broadcast? Through bitcoin-Qt/bitcoind I presume? But was this just connecting to peers or had you actually explicitly connected to a mining pool or well connected node?
The question is that most peers would have rejected it because they should already have known of the original transaction (12814b8ad57ce5654ba69eb26a52ddae1bff42093ca20cef3ad96fe7fd85d195) and not relayed your double spend (762443f6373b7c8b3833d4ad23578fc3099cc29b86d1359d0c0565e3c8614f91).
With all the nodes reverting to 0.7 and/or starting up with an empty memory pool it is not impossible for your node to have reached one of them with no knowledge of the original transaction and then because your double spend transaction was perfectly valid for that node to relay your transaction got relayed to other new nodes as well. Eventually then there would be a path that would reach the miner who eventually mined 225466 (the block with the double spend) --
BTC Guild [Edit: Yes, confirmed BTC Guild, per the coinbase].
$ git diff src/rpcrawtransaction.cpp
diff --git a/src/rpcrawtransaction.cpp b/src/rpcrawtransaction.cpp
index e634ed7..1f045e8 100644
--- a/src/rpcrawtransaction.cpp
+++ b/src/rpcrawtransaction.cpp
@@ -164,8 +164,6 @@ Value listunspent(const Array& params, bool fHelp)
CBitcoinAddress address(input.get_str());
if (!address.IsValid())
throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, string("Invalid Bitcoin address: ")+input.get_str());
- if (setAddress.count(address))
- throw JSONRPCError(RPC_INVALID_PARAMETER, string("Invalid parameter, duplicated address: ")+input.get_str());
setAddress.insert(address);
}
}
@@ -520,9 +518,11 @@ Value sendrawtransaction(const Array& params, bool fHelp)
{
// push to local node
CTxDB txdb("r");
- if (!tx.AcceptToMemoryPool(txdb))
- throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "TX rejected");
-
+ if (!tx.AcceptToMemoryPool(txdb)) {
+ SyncWithWallets(tx, NULL, true);
+ RelayMessage(CInv(MSG_TX, hashTx), tx);
+ throw JSONRPCError(RPC_DESERIALIZATION_ERROR, string("TX rejected, relay anyway ")+hashTx.GetHex());
+ }
SyncWithWallets(tx, NULL, true);
}
RelayMessage(CInv(MSG_TX, hashTx), tx);
$ bitcoin createrawtransaction '[{"txid": "e6ee06cec15f8fab2c1aa81037e6ba9b1d7c7c4073a2795e847aa9ca5b84daf1", "vout": 1}]' '{"1J1F3U7gHrCjsEsRimDJ3oYBiV24wA8FuV": 137.35368622}'
0100000001f1da845bcaa97a845e79a273407c7c1d9bbae63710a81a2cab8f5fc1ce06eee60100000000ffffffff01ae17b132030000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000
$ bitcoin signrawtransaction 0100000001f1da845bcaa97a845e79a273407c7c1d9bbae63710a81a2cab8f5fc1ce06eee60100000000ffffffff01ae17b132030000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000 '[{"txid": "e6ee06cec15f8fab2c1aa81037e6ba9b1d7c7c4073a2795e847aa9ca5b84daf1", "vout": 1, "scriptPubKey": "76a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac"}]'
{
"hex" : "0100000001f1da845bcaa97a845e79a273407c7c1d9bbae63710a81a2cab8f5fc1ce06eee6010000008c493046022100d6e0dec64778c669a4869a73dc057959ac6f8c6fa390e9ceb03bb040d3eb0933022100f3dc55dccbde883e7aadf737a5d8531847fdab1cc2b80a2357ce5dc5378a8485014104054f0d458c4dc3d0a4bb35cd17e624eb76ea99b702561bd0bea0aefe34c6c860fafca4faae957bb009e0ece9cba07cccd30dc008512a9a3021dbcfd2127938fcffffffff01ae17b132030000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000",
"complete" : true
}
$ bitcoin createrawtransaction '[{"txid": "b53cbbf160f1a5c470dba13672338908c5c9099985f6fdc37d44a5facae957df", "vout": 1}]' '{"1J1F3U7gHrCjsEsRimDJ3oYBiV24wA8FuV": 62.64371378}'
0100000001df57e9cafaa5447dc3fdf6859909c9c50889337236a1db70c4a5f160f1bb3cb50100000000ffffffff01b2b86275010000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000
$ bitcoin signrawtransaction 0100000001df57e9cafaa5447dc3fdf6859909c9c50889337236a1db70c4a5f160f1bb3cb50100000000ffffffff01b2b86275010000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000 '[{"txid": "b53cbbf160f1a5c470dba13672338908c5c9099985f6fdc37d44a5facae957df", "vout": 1, "scriptPubKey": "76a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac"}]'
{
"hex" : "0100000001f1da845bcaa97a845e79a273407c7c1d9bbae63710a81a2cab8f5fc1ce06eee6010000008c493046022100d6e0dec64778c669a4869a73dc057959ac6f8c6fa390e9ceb03bb040d3eb0933022100f3dc55dccbde883e7aadf737a5d8531847fdab1cc2b80a2357ce5dc5378a8485014104054f0d458c4dc3d0a4bb35cd17e624eb76ea99b702561bd0bea0aefe34c6c860fafca4faae957bb009e0ece9cba07cccd30dc008512a9a3021dbcfd2127938fcffffffff01ae17b132030000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000",
"complete" : true
}
$ while true; do bitcoin sendrawtransaction 0100000001f1da845bcaa97a845e79a273407c7c1d9bbae63710a81a2cab8f5fc1ce06eee6010000008c493046022100d6e0dec64778c669a4869a73dc057959ac6f8c6fa390e9ceb03bb040d3eb0933022100f3dc55dccbde883e7aadf737a5d8531847fdab1cc2b80a2357ce5dc5378a8485014104054f0d458c4dc3d0a4bb35cd17e624eb76ea99b702561bd0bea0aefe34c6c860fafca4faae957bb009e0ece9cba07cccd30dc008512a9a3021dbcfd2127938fcffffffff01ae17b132030000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000; sleep 10; bitcoin sendrawtransaction 0100000001f1da845bcaa97a845e79a273407c7c1d9bbae63710a81a2cab8f5fc1ce06eee6010000008c493046022100d6e0dec64778c669a4869a73dc057959ac6f8c6fa390e9ceb03bb040d3eb0933022100f3dc55dccbde883e7aadf737a5d8531847fdab1cc2b80a2357ce5dc5378a8485014104054f0d458c4dc3d0a4bb35cd17e624eb76ea99b702561bd0bea0aefe34c6c860fafca4faae957bb009e0ece9cba07cccd30dc008512a9a3021dbcfd2127938fcffffffff01ae17b132030000001976a914ba85dc466140d3ef2eac3f7e42088ec501315a4b88ac00000000; sleep 10; done
15e8729f4632f9542790e12e7e6891ac42ca9d109c38656e7259b58ee9133d2e
22b85b88ac4f18afaab9c06ee70b47df7da23201bd2ad646ca0b202d775aa999
15e8729f4632f9542790e12e7e6891ac42ca9d109c38656e7259b58ee9133d2e
22b85b88ac4f18afaab9c06ee70b47df7da23201bd2ad646ca0b202d775aa999
15e8729f4632f9542790e12e7e6891ac42ca9d109c38656e7259b58ee9133d2e
22b85b88ac4f18afaab9c06ee70b47df7da23201bd2ad646ca0b202d775aa999
......
(I cannot remember whether the last command returns simply txid or "error: {"code":-22,"message":"TX rejected, relay anyway txid"})
No. My fully synced bitcoind refused to execute any commands except getinfo. It simply reports error message: "Warning: Displayed transactions may not be correct! You may need to upgrade, or other nodes may need to upgrade." and exit.
So I had to set up a new bitcoind in Parallels Desktop's Ubuntu virtual machine and this bitcoind was not yet fully synced with the network. And it shouldn't have many connections as it was behind NAT.
